linux-kernel - [PATCH 3/3] irqchip/sifive-plic: Enable oneshot-safe threaded EOIs

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Date:   Sat, 26 Nov 2022 17:41:34 -0600
From:   Samuel Holland <samuel@...lland.org>
To:     Marc Zyngier <maz@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Palmer Dabbelt <palmer@...belt.com>
Cc:     linux-riscv@...ts.infradead.org,
        Samuel Holland <samuel@...lland.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 3/3] irqchip/sifive-plic: Enable oneshot-safe threaded EOIs

This defers the EOI until the IRQ thread has finished, avoiding the need
to mask the IRQ while the thread is pending.

Signed-off-by: Samuel Holland <samuel@...lland.org>
---

 drivers/irqchip/irq-sifive-plic.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/irqchip/irq-sifive-plic.c b/drivers/irqchip/irq-sifive-plic.c
index ff47bd0dec45..d8fc3354b38c 100644
--- a/drivers/irqchip/irq-sifive-plic.c
+++ b/drivers/irqchip/irq-sifive-plic.c
@@ -203,6 +203,8 @@ static struct irq_chip plic_chip = {
 #endif
 	.irq_set_type	= plic_irq_set_type,
 	.flags		= IRQCHIP_SKIP_SET_WAKE |
+			  IRQCHIP_ONESHOT_SAFE |
+			  IRQCHIP_EOI_THREADED |
 			  IRQCHIP_AFFINITY_PRE_STARTUP,
 };
 
-- 
2.37.4